The RX/TX buffers are gone so drop the lock (it should have been
in the transport struct anyway).
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
---
drivers/iio/accel/kxsd9.c | 19 ++++---------------
1 file changed, 4 insertions(+), 15 deletions(-)
diff --git a/drivers/iio/accel/kxsd9.c b/drivers/iio/accel/kxsd9.c
index fe85f61cfa9d..a8ee041dd4e4 100644
--- a/drivers/iio/accel/kxsd9.c
+++ b/drivers/iio/accel/kxsd9.c
@@ -41,14 +41,10 @@
/**
* struct kxsd9_state - device related storage
- * @buf_lock: protect the rx and tx buffers.
- * @us: spi device
- * @rx: single rx buffer storage
- * @tx: single tx buffer storage
- **/
+ * @map: regmap to the device
+ */
struct kxsd9_state {
struct regmap *map;
- struct mutex buf_lock;
};
#define KXSD9_SCALE_2G "0.011978"
@@ -74,7 +70,6 @@ static int kxsd9_write_scale(struct iio_dev *indio_dev, int micro)
if (!foundit)
return -EINVAL;
- mutex_lock(&st->buf_lock);
ret = regmap_read(st->map,
KXSD9_REG_CTRL_C,
&val);
@@ -84,7 +79,6 @@ static int kxsd9_write_scale(struct iio_dev *indio_dev, int micro)
KXSD9_REG_CTRL_C,
(val & ~KXSD9_FS_MASK) | i);
error_ret:
- mutex_unlock(&st->buf_lock);
return ret;
}
@@ -94,15 +88,11 @@ static int kxsd9_read(struct iio_dev *indio_dev, u8 address)
struct kxsd9_state *st = iio_priv(indio_dev);
__be16 raw_val;
- mutex_lock(&st->buf_lock);
ret = regmap_bulk_read(st->map, address, &raw_val, sizeof(raw_val));
if (ret)
- goto out_fail_read;
+ return ret;
/* Only 12 bits are valid */
- ret = be16_to_cpu(raw_val) & 0xfff0;
-out_fail_read:
- mutex_unlock(&st->buf_lock);
- return ret;
+ return be16_to_cpu(raw_val) & 0xfff0;
}
static IIO_CONST_ATTR(accel_scale_available,
@@ -220,7 +210,6 @@ int kxsd9_common_probe(struct device *parent,
st = iio_priv(indio_dev);
st->map = map;
- mutex_init(&st->buf_lock);
indio_dev->channels = kxsd9_channels;
indio_dev->num_channels = ARRAY_SIZE(kxsd9_channels);
indio_dev->name = name;
--
2.7.4
--
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